What does 6 and 4 mean in match play golf?

Answer 1

It means that the team was 6 up with 4 holes to play, so they won.
They were 5-up going into the 14th hole and then won that hole, so they went 6-up but there are only 4 holes to play (15, 16, 17, 18) so the other team couldn't possibly win.